IT Infrastructure - Dialing the 830 area code

Some users have asked why they get different results when dialing numbers in the 830 area code. Here's what we're told by AT&T:

830 is an extended local calling area for surrounding communities. On a per subscriber basis, businesses and individuals within the 830 calling area have the option of paying for "metro" services. If they have done that, calls to their 830 numbers are treated as "local" calls. You may or may not need to dial the 830 in front of their normal 7-digit phone number depending on the location.

If they have chosen not to pay for "metro" services, the call will be treated as a "toll" call, and you will need to dial it as a long distance call.